Touch up the previous commit

modules/prelude-python.el

@@ -9,8 +9,10 @@
 
 ;;; Commentary:
 
-;; Some basic configuration for python.el (the latest and greatest
-;; Python mode Emacs has to offer).
+;; Enhanced configuration for python.el (the latest and greatest
+;; Python mode Emacs has to offer).  Most notably Prelude leverages
+;; anaconda mode to provide code navigation, documentation lookup and
+;; completion for Python.
 
 ;;; License:
 
@@ -31,21 +33,26 @@
 
 ;;; Code:
 
-(defcustom prelude-python-mode-set-encoding-automatically nil
-  "Non-nil values enable auto insertion of '# coding: utf-8' on python buffers."
-  :type 'boolean
-  :group 'prelude)
+(require 'electric)
+(require 'prelude-programming)
 
+;; Code navigation, documentation lookup and completion for Python
 (prelude-require-package 'anaconda-mode)
 
 (when (boundp 'company-backends)
   (prelude-require-package 'company-anaconda)
   (add-to-list 'company-backends 'company-anaconda))
 
-(require 'electric)
-(require 'prelude-programming)
+(defcustom prelude-python-mode-set-encoding-automatically nil
+  "Non-nil values enable auto insertion of '# coding: utf-8' on python buffers."
+  :type 'boolean
+  :group 'prelude)
 
-;; Copy pasted from ruby-mode.el
+;;; Encoding detection/insertion logic
+;;
+;; Adapted from ruby-mode.el
+;;
+;; This logic was useful in Python 2, but it's not really needed in Python 3.
 (defun prelude-python--encoding-comment-required-p ()
   (re-search-forward "[^\0-\177]" nil t))
 
@@ -84,14 +91,16 @@
           (when (buffer-modified-p)
             (basic-save-buffer-1)))))))
 
+;;; python-mode setup
+
 (when (fboundp 'exec-path-from-shell-copy-env)
   (exec-path-from-shell-copy-env "PYTHONPATH"))
 
 (defun prelude-python-mode-defaults ()
   "Defaults for Python programming."
   (subword-mode +1)
-  (anaconda-mode 1)
-  (eldoc-mode 1)
+  (anaconda-mode +1)
+  (eldoc-mode +1)
   (setq-local electric-layout-rules
               '((?: . (lambda ()
                         (and (zerop (first (syntax-ppss)))